Improved fan for sewing-machines



UNITED STATES PATENT OFFICE.

JAMES H. STONE, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVED FN FOR SEWINGfMAGHINES..

Specication forming part of Letters Patent No. 81,429, dated August 25,1868.

To all whom it may concern:

Be it known that I, JAMES H. STONE, of the city and county ofWashington, in the District of Columbia, have invented a new and usefullImprovement in Fans for Sewing- Machines; and.` I do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to which my inventionappertains to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1, Sheet 1,is a side elevation of the fan, showing itsapplication to the sewingmachine, the wheel and bed-plate of the latterbeing detached. Figs. 2 and 3, Sheet l, are

'side elevations of the spur and pinion wheels,

respectively. Fig. l, Sheet 2,is a perspective view of a sewingmacliinetable, with the fan and wheels attached.

Similar letters of reference indicate like parts in the drawing. Y

This invention has for its object to furnish a simple and cheap fan forsewing-machines, by means'of which the operator can, while sewing, causea current of cool air to circulate about the table of the machine, toreduce the oppressive heat incident to such work during the summermonths 5 and it consists in operating the fans directly from the drivingshaft of the machineby means of gearing or friction-rolls, as will behereinafter more fully described.

A represents the driving-shaft of 'an ordinary sewing-machine. Upon itis keyed the beveled spur or driving wheel B. This wheel engages with acorrespondingly -beveled pinion-wheel, F, secured to the lower end of ashort vertical shaft, E, to which the shaft bearing the fans isattached. The short shaft E extends through to table C of thesewingmachine, and has its bearings in a bracket, D, secured to theunder side of the table. It

is also provided with a shoulder near its lower lend, which rests uponthe bracket D, or a metallic socket placed therein, and is thus held inposition. f

C is the fan-shaft, bearing at its upper end the radial arms K, to whichthe fans L are secured in any proper manner. The fan-shaft is securedtothe shaft E by a dovetail connection and key, H,in such a manner as tobe easily removed when desired. If preferred, a screw-joint may be used;but the method of attaching the shaft is not material.

From the above description, taken in connection with the drawings, theoperation will be easily understood. As the shaft A is r'otated in theoperation of sewing, a rotary motion is imparted to the fan through thegearing B F, impelling a current of cool air over the operator, greatlylessening the fatigue of his labors. Y

From the foregoing description it will be readily seen that a simple andeconomical fan is produced, operated directly from the driving-shaft ofthe sewingmachine, with but little additional power, and which Acan beeasily applied to any sewing-machine in use. It will be found of greatvalue in factories where sewing-machines are used in large numbers, andthe crowded condition of the rooms renders the ordinary circulation ofair insuff1- cient to overcome the heat.

Having 'thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is

Operating the rotary fan to a sewin g-machine directly from thedriving-shaft Athrough the medium of the beveled gearing B F, asdescribed, for the purpose specified.

JAS. H. STONE.

Witnesses:

Gnus. R. CAMPBELL, D. C. WILSON.

